Sand Finish HDPE Waterproofing Membrane

Sand Finish HDPE Waterproofing Membrane

About product (Item NO. DYP-811) Using HDPE (High Density Polyethylene) waterproofing membrane sheet as the bottom layer, adding non-asphaltic adhesive layer in the middle, covering sand or mineral grain as the surface layer, the HDPE processes the advantage of high tensile strength, impact...

Product Details

 Sand Finish HDPE Waterproofing Membrane

About product
 (Item NO. DYP-811)

Using HDPE (High Density Polyethylene)  waterproofing membrane sheet as the bottom layer, adding non-asphaltic adhesive  layer in the middle, covering sand or mineral grain as the surface layer, the  HDPE processes the advantage of high tensile strength, impact resistance,  puncture resistance, which make it specially adaptable to the
underground and tunnel project  waterproofing.

 

 Product Structure
 

图片1_副本.jpg

 


Description: This product has a sand finish to protect the self-adhesive layer, which makes it ready for workers to work on top and provides perfect bonding with post-poured concrete.  

 

Product performance

1) High tensile strength, impact  resistance, puncture resistance, durability up to 100 years theoretically;
 2)Skin tight bonding resists "water  breakthrough" even if partial perforation or breakage occurs.
 3)Anti-subsidence and anti-cracking due to  the pre-paving & inverted bonding installation method;
 4)Easy& Safe construction, low  requirements for the substrate or weather condition, no hot gas welding required;
 5)Environmental-friendly: the construction  requires no solvent, no fuel of any kind;.
 6)Anti-Bacterium resistant & anti-mould:
  

Product  Specification

Thickness/mm

1.2

1.5

1.7

2.0

       Surface layer

PE/Sand/Mineral Grain
       PE/S
       PE/S

Inter layer

            Non-asphaltic reactive adhesive

Bottom layer

HDPE sheet
       HDPE/EVA
       HDPE/EVA

Width/m

2
       2000
       2000

Length/m

20/customized

20/customized

20/customized

15/customized

 

Where to use

1.Building  basement , air-defense construction, tunnel projects or other underground  engineering;       

2.Railway,  subway, highway or other transportation system waterproofing;  

3.Refuse  landfill, sewage treatment works & chemical pool or other environmental protective  engineering;

4.Reservoir, dam, water channel &  artificial lake. Etc;


Executive Standard

Executive standard: GB/T23457-2009  Pre-paving/Wet-paving Waterproof Membrane

1

Item

Index

2

Tensile performance

Tensile strength/(N/50mm) ≥

500

3

  Elongation at break/% ≥

400

4

Nail/tearing resistance/N  ≥

400

5

Impact resistance performance

Dia(10±0.1)mm, no leakage

6

Static load

20kg, no leakage

7

Heat resistance

70℃, 2h, No displacement, flow or dripping

8

Low-temp bending

-23℃, no cracking

9

Anti-watermoving between layers

0.6Mpa, no watermoving

10

Peeling strength from post-poured    concrete/(N/mm) ≥

No treatment

2.0

11

Cement powder contaminated surface

1.5

12

Sediment contaminated surface

1.5

13

Ultraviolet radiation aging

1.5

14

Thermal ageing

1.5

15

After immersed in water

1.5

16

Lap joint shear strength/(N/mm) ≥

1.8

17

Thermal ageing (70℃, 168h)

Tension retain/% ≥

90

18

Elongation retain/% ≥

80

19

Low-temp bending

-23℃, no cracking

20

Thermal stability

Appearance

No wrinkles, sliding or flowing

21

Dimensional change/% ≤

2.0


Construction guideline

  • For  tunnel project

Process:
 Tunnel arch crown – snap lines – install  upholder(hanging nails) – pave  membrane –  mechanically fix HDPE membrane(tie hanging tapes) – overlapping DCPS membrane –  joint sealing - reinforcement assembling – concrete lining.

  • For  underground project

Process:
 Level  surface: substrate cleaning – snap lines – pave HDPE  membrane – overlapping HDPE membrane – joint sealing – reinforcement assembling  – concrete lining.

Vertical  surface: substrate cleaning – snap lines – pave HDPE  membrane – mechanically fix HDPE membrane – overlapping HDPE membrane - reinforcement  assembling - concrete lining.


Construction steps: 

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Package
 Product is packed in rolls and wrapped by  plastic membrane.

Storage

  • Product should  be stored in a dry, ventilated and cool place with temperature lower than 45℃.

  • Do not  exposed to insolation and rain.

  • flat-wise  storage, with stacking height not over 5 layers. Any incline or crossover  should be prevented.

  • Under  normal storage condition, product shelf life is one year.

      

图片3_副本.jpg


 

 

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